[Sensors] Improvements in shared buffer managing

device/generic_sensor/public/cpp/BUILD.gn

Index: device/generic_sensor/public/cpp/BUILD.gn
diff --git a/components/physical_web/webui/BUILD.gn b/device/generic_sensor/public/cpp/BUILD.gn
similarity index 66%
copy from components/physical_web/webui/BUILD.gn
copy to device/generic_sensor/public/cpp/BUILD.gn
index f3d6432dd2b700c0f266293e7ce3eef7ca158809..8e3f5c906b95e7fdf30fba37ec86209c195b07b9 100644
--- a/components/physical_web/webui/BUILD.gn
+++ b/device/generic_sensor/public/cpp/BUILD.gn
@@ -2,13 +2,14 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("webui") {
+source_set("cpp") {
   sources = [
-    "physical_web_ui_constants.cc",
-    "physical_web_ui_constants.h",
+    "sensor_reading.cc",
+    "sensor_reading.h",
   ]
 
   deps = [
     "//base",
+    "//device/base/synchronization",
   ]
 }